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['Size and Weight Limits']
['National Network']
11/08/2025
State Info
| [The federally–designated routes on the National Network consist of the Interstate System, except as noted, and the following additional Federal–aid Primary highways] | ||
| Route | From | To |
| Note: Iowa State law allows STAA–dimensioned vehicles to operate on all highways in the State. The routes shown below were incorporated into the NN by the FHWA in 1984. | ||
| US 6 | NE State Line | I–80 Council Bluffs. |
| US 6 | IA 48 Lewis | I–80 N. of Wilton. |
| US 6 | IA 130 Davenport | I–74. |
| US 18 | WCL Rock Valley | WI State Line. |
| US 20 | I–29 Sioux City | IL State Line. |
| US 30 | Missouri RiverBridge (NE) | IL State Line Clinton. |
| US 34 | Missouri RiverBridge (NE) | IL State Line Burlington. |
| US 52 | US 61 Dubuque | IA 386 N. Int. Sageville. |
| US 52 | IA 3 Luxemburg | US 18 E. Int. |
| US 52 | ECL Calmar | Burr Oak. |
| US 59 | IA 2 Shenandoah | IA 184. |
| US 59 | IA 92 Carson | US 6 N. Int. |
| US 59 | IA 83 Avoca | US 30 Denison. |
| US 59 | US 20 Holstein | IA 3. |
| US 59 | IA 10 E. Int. W. of Sutherland | US 18 Sanborn. |
| US 61 | Des Moines River Bridge (MO) Keokuk | WI State Line. |
| US 63 | MO State Line | IA 146 New Sharon. |
| US 63 | I–80 Malcom | NCL Chester. |
| US 65 | US 34 N. Int. Lucas | IA 117/330. |
| US 65 | US 30 Colo | Sheffield. |
| US 65 | SCL Mason City | IA 105 Northwood. |
| US 67 | IL State Line Davenport | 4.64 Miles N. of Clinton. |
| US 69 | SCL Lamoni | I–35. |
| US 69 | US 6/65 Des Moines | IA 105 Lake Mills. |
| US 71 | MO State Line | IA 196 Ulmer. |
| US 71 | US 20 Early | MN State Line. |
| US 75 | I–29 N. Int. Sioux City | IA 9 E. Int. |
| US 77 | NE State Line | I–29 Sioux City. |
| US 136 | Des Moines River Bridge (MO) | Mississippi River Bridge Keokuk. |
| US 151 | I–80 E. of Williamsburg | US 61 S. Int. |
| US 169 | SCL Arispe | IA 92 Winterset. |
| US 169 | SCL Desoto | I–80. |
| US 169 | US 6 Adel | IA 141 Perry. |
| US 169 | US 30 Beaver | IA 3. |
| US 169 | US 18 Algona | IA 9 W. Int. Swea City. |
| US 218 | US 136 Keokuk | IA 92 Ainsworth. |
| US 218 | IA 22 Riverside | IA 227. |
| IA 1 | IA 92 N. Int | IA 22 Kalona. |
| IA 1 | US 6/218 N. Int. Iowa City | I–80 Iowa City. |
| IA 1 | SCL Martelle | US 151. |
| IA 2 | NE State Line | IA 25 W. of Mt. Ayr. |
| IA 2 | Decatur Co. Line | Mississippi River Bridge (IL) Ft. Madison. |
| IA 3 | SD State Line | IA 12 N. Int. Akron. |
| IA 3 | US 75 Le Mars | IA 7. |
| IA 3 | IA 17 E. Int. Goldfield | IA 13 W. Int. |
| IA 4 | IA 3 Pocahontas | US 18 E. Int. |
| IA 4 | SCL Wallingford | IA 9 Estherville. |
| IA 5 | IA 2 Centerville | I–35. |
| IA 7 | IA 3 | US 71 N. Int. Storm Lake. |
| IA 7 | Barnum | US 20 Fort Dodge. |
| IA 8 | US 63 Traer | US 218. |
| IA 9 | IA 60 | IA 26 Lansing. |
| IA 10 | US 59 E. Int | ECL Sutherland. |
| IA 12 | US 20 | NCL Sioux City. |
| IA 13 | US 30 Bertram | US 52. |
| IA 14 | IA 92/5 | NCL Newton. |
| IA 14 | US 30 Marshalltown | US 20 S. Int. |
| IA 15 | US 18 Whittemore | IA 9 W. Int. |
| IA 16 | NCL Eldon | IA 1 N. Int. |
| IA 16 | Denmark | US 61 Wever. |
| IA 17 | IA 141 Granger | IA 3 E. Int. |
| IA 21 | SCL What Cheer | IA 412 Waterloo. |
| IA 22 | WCL Wellman | IA 70 W. Int. |
| IA 23 | US 63 Ottumwa | IA 137 Eddyville. |
| IA 25 | IA 2 | IA 92 Greenfield. |
| IA 25 | IA 925 W. Int | IA 44 Guthrie Center. |
| IA 26 | IA 9 Lansing | New Albin. |
| IA 28 | IA 92 | US 6 Des Moines. |
| IA 31 | SCL Correctionville | US 59. |
| IA 37 | WCL Earling | US 59. |
| IA 38 | US 61 Muscatine | I–80. |
| IA 38 | SCL Tipton | US 30 E. Int. |
| IA 39 | US 59 Denison | Deloit. |
| IA 44 | US 71 Hamlin | IA 141. |
| IA 46 | IA 5 | IA 163 Des Moines. |
| IA 48 | US 59 Shenandoah | NCL Essex. |
| IA 48 | US 34 Red Oak | US 6. |
| IA 49 | SCL Lenox | US 34. |
| IA 51 | US 18 Postville | IA 9. |
| IA 55 | Seymour | IA 2. |
| IA 60 | US 75 Lemars | MN State Line. |
| IA 62 | US 61 Maquoketa | US 52 Bellevue. |
| IA 64 | US 151 Anamosa | US 61. |
| IA 70 | Columbus City | IA 22 W. Int. |
| IA 77 | IA 92 | Keota. |
| IA 78 | IA 149 | IA 249 Winfield. |
| IA 78 | WCL Morning Sun | US 61. |
| IA 83 | S. of Walnut | US 6 Atlantic. |
| IA 85 | US 63 Montezuma | IA 21. |
| IA 86 | US 71 | IA 9 Montgomery. |
| IA 92 | NE State Line | IA 48 Griswold. |
| IA 92 | WCL Fontanelle | IA 1 N. Int. |
| IA 92 | IA 1 S. Int | Cotter. |
| IA 93 | WCL Sumner | IA 150 Fayette. |
| IA 94 | I–380 Cedar Rapids | Palo. |
| IA 96 | Gladbrook | US 63 Traer. |
| IA 99 | Toolesboro | US 61 Wapello. |
| IA 100 | IA 151 Cedar Rapids | I–380. |
| IA 103 | US 218 | US 61 Fort Madison. |
| IA 105 | US 69 Lake Mills | US 218 St. Ansgar. |
| IA 107 | SCL Thornton | US 18 Clear Lake. |
| IA 110 | US 20 | IA 7 Storm Lake. |
| IA 111 | US 18 Britt | Woden. |
| IA 117 | IA 163 Prairie City | US 65. |
| IA 127 | IA 183 S. Int | US 30 Logan. |
| IA 130 | US 61/67 Davenport | I–80. |
| IA 133 | US 30 | Nevada. |
| IA 136 | ECL Delmar | WCL Lost Nation. |
| IA 136 | SCL Worthington | US 52/IA 3 Luxemburg. |
| IA 137 | IA 5 Albia | IA 23. |
| IA 141 | I–29 | US 30/59 Denison. |
| IA 141 | WCL Manning | US 169. |
| IA 141 | IA 210 Woodward | I–35 Urbandale. |
| IA 144 | IA 141 Perry | US 30 Grand Junction. |
| IA 145 | I–29 | ECL Thurman. |
| IA 146 | US 63 New Sharon | Dunbar. |
| IA 148 | IA 2 Bedford | US 34. |
| IA 148 | IA 951 Carbon | I–80. |
| IA 149 | US 63 | IA 78 Martinsburg. |
| IA 149 | SCL Williamsburg | I–80. |
| IA 150 | US 218 Vinton | IA 283. |
| IA 150 | US 20 | US 18 West Union. |
| IA 150 (Old) | 0 Center Point | IA 150. |
| IA 157 | US 63 | Lime Springs. |
| IA 160 | US 69/IA 415 | I–35 Ankeny. |
| IA 163 | US 65 Des Moines | IA 92 Oskaloosa. |
| IA 173 | IA 83 Atlantic | I–80. |
| IA 175 | NE State Line | ECL Onawa. |
| IA 175 | US 71 S. Int | ECL Lake City. |
| IA 175 | Gowrie | ECL Dayton. |
| IA 175 | WCL Stratford | ECL Radcliffe. |
| IA 175 | US 65 N. Int | US 63 Voorhies. |
| IA 181 | Melcher–Dallas | IA 5/92. |
| IA 183 | IA 127 N. Int | NCL Pisgah. |
| IA 184 | WCL Randolph | US 59. |
| IA 192 | I–29/80 | I–29 Council Bluffs. |
| IA 196 | US 71 | US 20 Sac City. |
| IA 210 | IA 141 | NCL Woodward. |
| IA 210 | IA 17 N. Int | ECL Slater. |
| IA 215 | Union | IA 175 Eldora. |
| IA 221 | I–35 | Roland. |
| IA 227 | US 218 | Stacyville. |
| IA 244 | I–80 | IA 191 Neola. |
| IA 249 | IA 78 | Winfield. |
| IA 272 | Elma | US 63. |
| IA 273 | WCL Drakesville | US 63. |
| IA 276 | US 71 | IA 327 Orleans. |
| IA 279 | US 30 | Atkins. |
| IA 281 | WCL Fairbank | IA 150. |
| IA 283 | Brandon | IA 150. |
| IA 287 | US 30 | Newhall. |
| IA 300 | Modale | I–29. |
| IA 316 | IA 5 Pleasantville | NCL Runnells. |
| IA 330 | US 65 | US 30 Marshalltown. |
| IA 363 | IA 101 | Urbana. |
| IA 401 | US 6 | Johnston. |
| IA 405 | Lone Tree | IA 22. |
| IA 406 | US 34 | US 61 Burlington. |
| IA 415 | US 6 Des Moines | IA 160. |
| IA 927 | IA 38 Wilton | I–280 Davenport. |
| IA 928 | US 20/IA 17 | US 20 Williams. |
| IA 930 | US 30 | Ames. |
| IA 939 | IA 150 Independence | IA 187. |
| IA 964 | IA 5/92 | IA 975/14 Knoxville. |
| IA 967 | US 20 | Farley. |
| IA 975 | IA 5/92 | IA 964/14 Knoxville. |
| University Ave | US 20 SW. of Cedar Falls | US 218 Cedar Falls. |
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['National Network']
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